Home / 18,609.28-25,656.96-15,239.68

Finding the Fourth Proportional to 18,609.28, 25,656.96 and 15,239.68

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Solution

The fourth proportional to 18,609.28, 25,656.96 and 15,239.68 is: 21,011.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.28 : 25,656.96 = 15,239.68 : x
  2. Step 2: Convert to fraction form
    18,609.28/25,656.96 = 15,239.68/x
  3. Step 3: Cross multiply
    18,609.28x = 25,656.96 × 15,239.68
  4. Step 4: Simplify right side
    18,609.28x = 391,003,860.17
  5. Step 5: Solve for x
    x = 391,003,860.17/18,609.28
  6. Step 6: Final answer
    x = 21,011.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.